How To Fix WU666 - Coupon & has already been entered

WU666 - Overview

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 666

• Message text: Coupon & has already been entered

What causes this issue?

The coupon already exists in the promotion.
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You can only assign a coupon once per promotion.

How to fix this error?

Delete the coupon number.

Error message extract from SAP system. Copyright SAP SE.

WU666 - Details

• The SAP error message WU666, which states "Coupon & has already been entered," typically occurs in the context of promotions or coupon management within the SAP system. This error indicates that the coupon code you are trying to enter has already been used or recorded in the system, and therefore cannot be entered again.
  Causes:
  
  Duplicate Entry: The coupon has already been applied to a transaction or order.
  System Configuration: The system may be configured to prevent the reuse of certain coupons.
  User Error: The user may have mistakenly entered the same coupon multiple times.
  
  Solutions:
  
  Check Coupon Status: Verify if the coupon has already been used in the system. You can do this by checking the transaction history or the coupon management module.
  Use a Different Coupon: If the coupon has already been used, consider using a different coupon that is valid and applicable to the transaction.
  Review System Settings: If you believe the coupon should be